# 棋盘尺寸
BOARD_SIZE = 8

# 棋盘初始化
board = [[' ' for _ in range(BOARD_SIZE)] for _ in range(BOARD_SIZE)]

# 输出当前棋盘状态
def print_board():
    print('  ' + ' '.join([chr(ord('A') + i) for i in range(BOARD_SIZE)]))
    for i in range(BOARD_SIZE):
        print(str(i + 1) + ' ' + ' '.join(board[i]))

# 落子
def place_piece(row, col, piece):
    if row < 0 or row >= BOARD_SIZE or col < 0 or col >= BOARD_SIZE:
        return False
    if board[row][col] != ' ':
        return False
    board[row][col] = piece
    return True

# 移动棋子
def move_piece(src_row, src_col, dst_row, dst_col):
    if src_row < 0 or src_row >= BOARD_SIZE or src_col < 0 or src_col >= BOARD_SIZE:
        return False
    if dst_row < 0 or dst_row >= BOARD_SIZE or dst_col < 0 or dst_col >= BOARD_SIZE:
        return False
    if board[src_row][src_col] == ' ' or board[dst_row][dst_col] != ' ':
        return False
    board[dst_row][dst_col] = board[src_row][src_col]
    board[src_row][src_col] = ' '
    return True

# 吃子
def capture_piece(row, col):
    if row < 0 or row >= BOARD_SIZE or col < 0 or col >= BOARD_SIZE:
        return False
    if board[row][col] == ' ':
        return False
    board[row][col] = ' '
    return True

# 游戏主循环
def game_loop():
    # 初始化棋盘
    board[3][3] = 'O'
    board[4][4] = 'O'
    board[3][4] = 'X'
    board[4][3] = 'X'
    print_board()

    while True:
        # TODO: 根据游戏规则获取下一步操作
        # 这里暂时通过用户输入示例进行模拟
        command = input('请输入您的指令（例如：落子：place 3 D，移动棋子：move 3 D 4 E，吃子：capture 4 E）：')
        command_parts = command.split()
        if len(command_parts) < 2:
            print('无效的指令')
            continue

        action = command_parts[0]
        if action == 'place':
            if len(command_parts) != 3:
                print('无效的落子指令')
                continue
            row = int(command_parts[1]) - 1
            col = ord(command_parts[2].upper()) - ord('A')
            if not place_piece(row, col, 'X'):
                print('落子失败')
                continue
        elif action == 'move':
            if len(command_parts) != 4:
                print('无效的移动棋子指令')
                continue
            src_row = int(command_parts[1]) - 1
            src_col = ord(command_parts[2].upper()) - ord('A')
            dst_row = int(command_parts[3]) - 1
            dst_col = ord(command_parts[4].upper()) - ord('A')
            if not move_piece(src_row, src_col, dst_row, dst_col):
                print('移动棋子失败')
                continue
        elif action == 'capture':
            if len(command_parts) != 3:
                print('无效的吃子指令')
                continue
            row = int(command_parts[1]) - 1
            col = ord(command_parts[2].upper()) - ord('A')
            if not capture_piece(row, col):
                print('吃子失败')
                continue
        else:
            print('无效的指令')
            continue

        print_board()
        # TODO: 判断游戏是否结束，输出胜负结果并结束循环

# 启动游戏
game_loop()
